Technological construction method of metal facing and thermal insulation layer composite wall

Abstract

The invention relates to the technical field of wall construction, and discloses a technological construction method of a metal facing and thermal insulation layer composite wall, which comprises the following steps: selecting a thermal insulation layer material: adopting a composite thermal insulation material with low thermal conductivity, good waterproofness and higher toughness, such as high-performance polyurethane foam or polystyrene foam, so that the thermal insulation performance is better; by optimizing the material of the thermal insulation layer and selecting the metal veneer, the thermal insulation performance of the wall body is greatly improved, the thermal bridge effect can be effectively reduced, the temperature stability of a building in different seasons is ensured, and therefore the energy consumption of an air conditioner and heating is reduced, and the energy-saving effect is achieved. And secondly, a metal-contact-free design and a floating connection mode are adopted, so that the problems of thermal bridge and structural deformation are effectively eliminated, and the overall thermal insulation performance and crack resistance of the wall body are improved. In addition, due to the built-in damp-proof layer and the waterproof design, the heat preservation layer is prevented from being affected with damp, the service life of the wall is prolonged, and the risks of corrosion and mildew are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of wall construction, and specifically to a process structure method for a composite wall of a metal finish and a thermal insulation layer. Background Art

[0002] A composite wall of a metal finish and a thermal insulation layer is a composite structure wall that combines a metal decorative surface and thermal insulation materials, and is widely used in building exterior wall systems. Its process structure generally includes: First, a layer of thermal insulation layer is fixed on the wall base, and common materials include polyurethane foam, rock wool or extruded polystyrene, etc., and these materials have good heat insulation performance. Then, metal decorative panels, such as aluminum plates, stainless steel plates, etc., are installed on the outside of the thermal insulation layer by means of bonding, mechanical fixing, etc. The metal finish not only plays a decorative role, but also provides additional waterproof and windproof protection. The metal plate and the thermal insulation layer are fixed through special connectors to ensure the structural stability of the composite wall. In addition, a breathable layer can be provided between the metal finish and the thermal insulation layer to prevent the thermal insulation material from getting damp. The overall structure has excellent heat insulation performance, wind pressure resistance and decorative effect, and also has good durability and corrosion resistance.

[0003] In the prior art, the technological structure of the composite wall with a metal finish and a thermal insulation layer has the following main disadvantages: Thermal bridge effect: At the connection between the metal finish and the thermal insulation layer, especially when using mechanical fixing connection methods, the high thermal conductivity of the metal itself may form a thermal bridge, resulting in local heat loss of the wall and reducing the overall thermal insulation effect of the wall; Construction complexity: The composite construction process of the metal finish and the thermal insulation layer is relatively complex and requires precise process control. Especially during the fixing of the thermal insulation layer and the installation of the metal finish, workers need to ensure that the thermal insulation material is not damaged while maintaining a firm connection between the metal plate and the thermal insulation layer, which can easily lead to greater construction difficulty and extended construction period; Connector corrosion problem: During the connection between the metal finish and the thermal insulation layer, the connectors used (such as bolts, hangers, etc.) may be exposed to the external environment and are easily corroded, thereby affecting the stability and durability of the wall; Risk of moisture absorption in the thermal insulation layer: If the thermal insulation layer is not tightly sealed during construction or later, it may absorb water or be invaded by moisture, resulting in a decrease in thermal insulation performance and may also cause problems such as mildew and rot, affecting the long-term performance of the wall; Unsatisfactory sound insulation effect: Although the composite wall with a metal finish and a thermal insulation layer performs well in thermal isolation, it may be insufficient in terms of sound insulation effect. Especially in an environment with strong external noise, the sound insulation effect of the wall cannot fully meet the requirements; High material cost: High-quality thermal insulation materials and metal finish materials are often expensive. Especially in some high-demand projects, the overall material cost may increase significantly, leading to an increase in construction costs; Relatively heavy wall weight: The composite wall with a metal finish and a thermal insulation layer is relatively heavy in structure, which may increase the load on the building structure. Especially in high-rise buildings or special structures, the impact of the wall on structural safety needs to be further considered; Difficulty in later maintenance: The maintenance of the metal finish is relatively complex. Especially in areas with high pollution and large climate changes, the metal surface may be contaminated, oxidized or corroded, and requires regular cleaning and repair, increasing the cost and workload of later maintenance.

[0004] Therefore, we propose a technological structure for the composite wall with a metal finish and a thermal insulation layer. Summary of the Invention

[0005] To achieve the above object, the present invention provides the following technical solution: A technological structure for the composite wall with a metal finish and a thermal insulation layer, comprising the following steps:

[0006] S1: Material selection and process optimization

[0007] S1.1: Selection of thermal insulation layer materials: Use composite thermal insulation materials with low thermal conductivity, good waterproofness and high toughness (such as high-performance polyurethane foam or polystyrene foam), which have better heat insulation performance and can maintain stability in a high-humidity environment, avoiding a decrease in thermal insulation performance caused by moisture absorption;

[0008] S1.2: Optimization of Metal Finishing Materials: Select aluminum alloy or stainless steel with strong corrosion resistance and advanced surface treatment technology as metal finishing materials. These metal materials not only have strong wind pressure resistance but also can effectively resist the erosion of the external climate, extending the service life of the wall.

[0009] S1.3: Built-in Moisture Barrier: Add a moisture-proof membrane or waterproof coating with good air permeability between the insulation layer and the metal finish to prevent water vapor from invading the insulation layer and reduce the phenomenon of moisture. The moisture barrier should have good air permeability to ensure the balance of moisture inside and outside the wall and prevent the insulation material from mildewing or rotting.

[0010] S2: Structural Connection and Thermal Bridge Elimination

[0011] S2.1: Metal-Free Contact Design: Use non-metallic connection materials, such as high-strength glass fiber-reinforced plastic (FRP) or rubber-based synthetic materials, to replace traditional metal connectors. This can effectively avoid direct contact between the metal finish and the insulation layer, eliminate the thermal bridge effect, and reduce heat conduction.

[0012] S2.2: Optimization of Thermal Insulation Gaskets and Connectors: Add thermal insulation gaskets at the contact points between the metal finish and the insulation layer, using polymer or composite gaskets with excellent thermal insulation performance to reduce heat transfer and further improve the thermal insulation effect of the wall.

[0013] S2.3: Floating Connection Method: Adopt the "floating" connection technology to avoid excessive fixation of the metal finish and the insulation layer, enabling the metal finish to expand and contract freely during thermal expansion and contraction, reducing stress concentration and structural deformation caused by thermal expansion and contraction.

[0014] S3: Protective Layer and Climate Adaptability

[0015] S3.1: Surface Coating Treatment: Perform nano-coating treatment on the surface of the metal finish to increase self-cleaning function and anti-ultraviolet ability, preventing problems such as rust and oxidation on the wall surface due to environmental pollution or climate change. The coating should have superhydrophobic properties to prevent water from accumulating on the surface.

[0016] S3.2: Anti-Corrosion Design: Coat the metal connection parts with special anti-corrosion materials and add waterproof sealing strips at the joints to ensure that the joints are not easily permeable to water and avoid corrosion of the metal finish due to moisture intrusion.

[0017] S3.3: Strengthen Climate Adaptability: For high-humidity or extreme climate regions, use heat-resistant and cold-resistant insulation materials and metal finish materials, and customize the protective measures for the wall system according to the climate characteristics of different regions (such as strengthening functions of anti-freezing, waterproofing, and wind resistance).

[0018] S4: Modular Prefabrication and On-Site Installation

[0019] S4.1: Modular Prefabrication: Combine the metal finish and the insulation layer into standardized wall modules and prefabricate them in the factory. The modular components include the fixed insulation layer and the metal finish. Seam treatment, coating treatment, etc. are completed in advance in the factory to reduce the complexity of on-site construction.

[0020] S4.2: Quick Installation System: Design a dedicated wall installation system. Through lightweight installation systems such as slide rails and aluminum alloy brackets, the modules can be quickly fixed to the main building structure. The installation process requires no excessive mechanical equipment, simplifies the installation operation, and reduces the safety hazards of on-site construction.

[0021] S4.3: Precise Docking System: At the joints of the wall modules, design a dedicated docking system to ensure precise and seamless connection between the modules, and avoid heat loss or water vapor penetration caused by loose joints.

[0022] S5: Design for Wall Post-maintenance and Repair

[0023] S5.1: Self-cleaning Function: The metal finish adopts self-cleaning coating technology, enabling the wall surface to automatically remove dust and pollutants, reducing the workload of later cleaning.

[0024] S5.2: Replaceable Module Design: The metal finish and the insulation layer of the wall adopt a replaceable design. When damaged or in need of maintenance, the damaged part can be replaced individually without demolishing the entire wall system, reducing the maintenance cost.

[0025] S5.3: Regular Inspection and Maintenance: Provide guidelines for regular inspection and maintenance of the wall, especially in humid and highly polluted areas. It is recommended to regularly check the moisture-proof layer and the corrosion of the metal finish to ensure the long-term service performance of the wall.

[0026] S6: Environmental Protection and Energy-saving Design

[0027] S6.1: Selection of Green Materials: All insulation materials, metal finishes, and connection materials are selected as environmentally friendly and recyclable materials, meeting the green building standards, reducing resource consumption and environmental pollution.

[0028] S6.2: Energy-saving Design: The high-efficiency insulation performance of the wall effectively reduces the energy consumption of the building, especially the burden of air conditioning use in winter and summer, thereby reducing the energy consumption and operation cost of the building.

[0029] S6.3: Recycling of Waste Materials: In the process of demolition or repair, the design ensures that all components can be easily disassembled and recycled, further improving the sustainability of the building.

[0030] Preferably, in step S1, high-performance polyurethane foam (PU) or extruded polystyrene foam (XPS) is selected as the main thermal insulation material. Ensure that these materials meet the building thermal insulation standards, have low thermal conductivity, good waterproof performance, and excellent compressive strength. Select aluminum alloy or stainless steel as the metal finishing material. These metals have good corrosion resistance and lightweight characteristics. Use metal sheets with weather-resistant coatings, and the surface is treated by spraying or electroplating processes to enhance its durability and anti-fouling ability. The metal finishing material should be treated with a nano-coating to enhance its self-cleaning function, and the surface has superhydrophobic characteristics to avoid the accumulation of water stains and dust, reducing the difficulty of later cleaning. A moisture-proof membrane with good air permeability is provided between the thermal insulation layer and the metal finishing. Materials such as PE film or EVA film are used. The moisture-proof layer needs to ensure that water vapor can be freely discharged, while preventing external moisture from penetrating into the interior of the thermal insulation layer. When installing the thermal insulation layer, first lay the moisture-proof membrane, and then install the metal finishing, ensuring that the moisture-proof membrane completely covers the joints of the thermal insulation layer to avoid water leakage or moisture accumulation.

[0031] Preferably, in step S2, metal-free connection materials such as fiberglass-reinforced plastics (FRP) or composite joints are used. These materials not only have strong mechanical strength but also good heat insulation performance. For the connection points between the metal finishing and the thermal insulation layer, non-metallic heat insulation materials (such as polyurethane glue, silicone, etc.) are used for fixation to avoid direct contact between the metal and the thermal insulation layer and prevent heat from being guided through the metal. High-strength heat insulation gaskets are selected, mainly using high-density polymers or high-molecular composite materials. These materials have excellent heat insulation and compressive resistance. Heat insulation gaskets are installed at each joint to ensure that the connectors do not cause heat conduction and are sealed during the installation process to prevent air or moisture from entering. Elastic brackets or floating support structures are used at the fixed connection parts between the metal finishing and the thermal insulation layer, so that the metal finishing can have a certain degree of freedom of movement during temperature changes, reducing stress concentration caused by thermal expansion and contraction. During construction, the metal finishing is fixed on the outer surface of the thermal insulation layer through elastic brackets to ensure that each module can adapt to thermal expansion and contraction without damaging the wall structure due to thermal expansion.

[0032] Preferably, in step S3, the metal finishing is treated with a superhydrophobic coating using nano-coating technology. This coating not only has the characteristics of waterproof and anti-ultraviolet, but also can effectively resist climate erosion such as acid rain and salt spray. The coating construction should be carried out before the installation of the metal finishing is completed. The coating is evenly sprayed to ensure no peeling and bubbles, and the coating thickness reaches the predetermined requirements. Coatings with strong corrosion resistance or special metals such as galvanized steel or stainless steel are used at the connection parts of the metal finishing, and anti-corrosion glue is used to seal the joints to avoid moisture penetration into the connection parts. High-quality waterproof sealing strips are installed at the joints between the metal finishing and the thermal insulation layer to ensure that the joints are completely sealed to avoid corrosion caused by water leakage or a humid environment.

[0033] Preferably, in step S4, the wall modules are prefabricated in the factory. Each module consists of a thermal insulation layer and a metal finish. The laying of the moisture-proof layer, the installation of metal plates, the treatment of coatings, etc. are completed in the factory. Each module is produced according to standardized dimensions and installation requirements to ensure the compatibility between modules, avoid on-site adjustments, reduce errors during the construction process, and use special lightweight installation tools such as slide rail brackets and adjustable aluminum alloy brackets. During on-site installation, only need to place the module on the fixed bracket for connection, reducing the cumbersome operations in the traditional installation method. Adopt the segmented installation method, install one module each time, and ensure the seamless connection between each module through a precise docking system. Design a precise docking system at the joint of each module to ensure no gap between the modules, avoid air or moisture penetration, and improve the overall sealing and thermal insulation performance of the wall.

[0034] Preferably, in step S5, a nano-coating with self-cleaning function is used, and a self-cleaning coating is sprayed on the surface of the metal finish. This coating makes dust and water droplets easy to slide off through the principle of surface tension, thus keeping the wall surface clean. Design modular thermal insulation layers and metal finishes, so that when damage or maintenance is required, a certain part of the wall can be replaced separately without removing the entire wall system. The module can be replaced by simple disassembly tools, reducing maintenance time and costs. Develop a detailed wall inspection plan, including anti-corrosion inspection of the metal finish, moisture-proof inspection of the thermal insulation layer, integrity inspection of the sealing strip, etc., to ensure that the wall maintains the best state during long-term use. Clean the metal finish regularly every year, especially in high-pollution areas, to ensure the continuous effectiveness of the coating.

[0035] Preferably, in step S6, all thermal insulation materials, metal finishes and connection materials must meet the green building standards, select recyclable, non-toxic and harmless materials, reduce the impact of building materials on the environment, and adopt efficient thermal insulation materials to ensure effective heat insulation of the wall in both winter and summer.

[0036] Compared with the prior art, the present invention provides a process construction method for a composite wall of a metal finish and a thermal insulation layer, having the following beneficial effects:

[0037] 1. For the process construction method of the composite wall of the metal finish and the thermal insulation layer, through optimizing the selection of thermal insulation layer materials and metal finishes, the thermal insulation performance of the wall has been greatly improved, effectively reducing the thermal bridge effect, ensuring the temperature stability of the building in different seasons, thereby reducing the energy consumption of air conditioning and heating and achieving energy-saving effects. Secondly, adopting a metal-free contact design and a floating connection method effectively eliminates thermal bridge and structural deformation problems, improving the overall thermal insulation performance and crack resistance of the wall. In addition, the built-in moisture-proof layer and waterproof design avoid the moisture absorption of the thermal insulation layer, extend the service life of the wall, and reduce the risks of corrosion and mildew.

[0038] 2. The technological structure of the composite wall with metal facing and thermal insulation layer greatly shortens the construction period through modular prefabrication technology and rapid installation system, simplifies on-site construction operations, and reduces the risks brought by errors and non-standard construction. The improved wall also has excellent climate adaptability and corrosion resistance, is suitable for various climate conditions, and performs more stably especially in extreme weather. In addition, the use of self-cleaning coating and module replaceable design makes the later maintenance work more convenient and low-cost, effectively reducing the maintenance period and cost. Detailed implementation mode

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0040] Embodiment

[0041] An embodiment of the technological structure of the composite wall with metal facing and thermal insulation layer

[0042] A technological structure of the composite wall with metal facing and thermal insulation layer includes the following steps:

[0043] S1: Material selection and process optimization

[0044] S1.1: Selection of thermal insulation layer materials: Use a composite thermal insulation material with low thermal conductivity, good waterproofness and high toughness (such as high-performance polyurethane foam or polystyrene foam), which has better heat insulation performance and can maintain stability in a high-humidity environment to avoid the decline of heat insulation performance caused by moisture absorption.

[0045] S1.2: Optimization of metal facing materials: Select aluminum alloy or stainless steel with strong corrosion resistance and advanced surface treatment technology as the metal facing materials. These metal materials not only have strong wind pressure resistance, but also can effectively resist the erosion of the external climate and extend the service life of the wall.

[0046] S1.3: Built-in moisture-proof layer: Add a moisture-proof film or waterproof coating with good air permeability between the thermal insulation layer and the metal facing to prevent water vapor from invading the thermal insulation layer and reduce the moisture absorption phenomenon. The moisture-proof layer needs to have good air permeability to ensure the moisture balance inside and outside the wall and prevent the thermal insulation material from mildewing or rotting.

[0047] S2: Structural connection and heat bridge elimination

[0048] S2.1: Metal-free contact design: Use non-metallic connection materials, such as high-strength fiberglass-reinforced plastics (FRP) or rubber-based synthetic materials, to replace traditional metal connectors. This can effectively prevent direct contact between the metal finish and the insulation layer, eliminate the thermal bridge effect, and reduce heat conduction.

[0049] S2.2: Optimization of thermal insulation gaskets and connectors: Add thermal insulation gaskets at the contact points between the metal finish and the insulation layer. Use polymer or composite gaskets with excellent thermal insulation performance to reduce heat transfer and further enhance the wall's insulation effect.

[0050] S2.3: Floating connection method: Adopt the "floating" connection technology to avoid excessive fixation of the metal finish and the insulation layer, enabling the metal finish to expand and contract freely during thermal expansion and contraction, reducing stress concentration and structural deformation caused by thermal expansion and contraction.

[0051] S3: Protective layer and climate adaptability

[0052] S3.1: Surface coating treatment: Conduct nano-coating treatment on the surface of the metal finish to increase self-cleaning function and UV resistance, preventing problems such as rust and oxidation on the wall surface due to environmental pollution or climate change. The coating should have superhydrophobic properties to prevent water accumulation on the surface.

[0053] S3.2: Anti-corrosion design: Coat the metal connection parts with special anti-corrosion materials and add waterproof sealing strips at the joints to ensure that the joints are not easily permeable to water and prevent corrosion of the metal finish due to moisture intrusion.

[0054] S3.3: Enhance climate adaptability: For high-humidity or extreme climate regions, use heat-resistant and cold-resistant insulation materials and metal finish materials, and customize the protective measures for the wall system according to the climate characteristics of different regions (such as enhancing anti-freezing, waterproofing, and wind resistance functions).

[0055] S4: Modular prefabrication and on-site installation

[0056] S4.1: Modular prefabrication: Combine the metal finish and the insulation layer into standardized wall modules and prefabricate them in the factory. The modular components include the fixed insulation layer and the metal finish. The joint treatment, coating treatment, etc. are completed in the factory in advance to reduce the complexity of on-site construction.

[0057] S4.2: Quick installation system: Design a dedicated wall installation system. Through lightweight installation systems such as slide rails and aluminum alloy brackets, the modules can be quickly fixed to the main structure of the building. The installation process requires no excessive mechanical equipment, simplifies the installation operation, and reduces the safety hazards of on-site construction.

[0058] S4.3: Precision Docking System: At the joints of wall modules, a dedicated docking system is designed to ensure precise and seamless connection between modules, avoiding heat loss or water vapor penetration caused by loose joints.

[0059] S5: Design for Post-construction Maintenance and Repair of Walls

[0060] S5.1: Self-cleaning Function: The metal finish adopts self-cleaning coating technology, enabling the wall surface to automatically remove dust and pollutants, reducing the workload of post-construction cleaning.

[0061] S5.2: Replaceable Module Design: The metal finish and insulation layer of the wall adopt a replaceable design. When damage occurs or maintenance is required, the damaged part can be replaced individually without demolishing the entire wall system, reducing maintenance costs.

[0062] S5.3: Regular Inspection and Maintenance: Provide guidelines for regular inspection and maintenance of walls, especially in humid and highly polluted areas. It is recommended to regularly check the moisture-proof layer and the corrosion of the metal finish to ensure the long-term service performance of the wall.

[0063] S6: Environmental Protection and Energy-saving Design

[0064] S6.1: Selection of Green Materials: All insulation materials, metal finishes, and connection materials are selected as environmentally friendly and recyclable materials, meeting the green building standards and reducing resource consumption and environmental pollution.

[0065] S6.2: Energy-saving Design: The high-efficiency insulation performance of the wall effectively reduces the energy consumption of the building, especially the burden of air-conditioning use in winter and summer, thus reducing the building's energy consumption and operating costs.

[0066] S6.3: Recycling of Waste Materials: During the demolition or repair process, the design ensures that all components can be easily disassembled and recycled, further enhancing the sustainability of the building.

[0067] Specifically, in step S1, high-performance polyurethane foam (PU) or polystyrene foam (XPS) is selected as the main thermal insulation material. Ensure that these materials meet the building thermal insulation standards, have a low thermal conductivity, good waterproof performance, and excellent compressive strength. Aluminum alloy or stainless steel is selected as the metal finishing material. These metals have good corrosion resistance and lightweight characteristics. Use metal sheets with weather-resistant coatings, and the surface is treated by spraying or electroplating processes to enhance its durability and anti-fouling ability. The metal finishing material should be treated with a nano-coating to enhance its self-cleaning function, and the surface has super-hydrophobic characteristics to avoid the accumulation of water stains and dust, reducing the difficulty of later cleaning. A moisture-proof membrane with good air permeability is set between the thermal insulation layer and the metal finishing. Materials such as PE film or EVA film are used. The moisture-proof layer needs to ensure that water vapor can be freely discharged, while preventing external moisture from penetrating into the interior of the thermal insulation layer. When installing the thermal insulation layer, first lay the moisture-proof membrane, and then install the metal finishing, ensuring that the moisture-proof membrane completely covers the joints of the thermal insulation layer to avoid water leakage or moisture accumulation.

[0068] Specifically, in step S2, metal-free connection materials such as fiberglass-reinforced plastics (FRP) or composite joints are used. These materials not only have strong mechanical strength but also good heat insulation performance. For the connection points between the metal finishing and the thermal insulation layer, non-metallic heat insulation materials (such as polyurethane glue, silicone, etc.) are used for fixation to avoid direct contact between the metal and the thermal insulation layer and prevent heat from being guided through the metal. High-strength heat insulation gaskets are selected, mainly using high-density polymers or polymer composites. These materials have excellent heat insulation and compressive resistance. Heat insulation gaskets are installed at each joint to ensure that the connectors do not cause heat conduction and are sealed during the installation process to prevent air or moisture from entering. Elastic brackets or floating support structures are used at the fixed connection points between the metal finishing and the thermal insulation layer, so that the metal finishing can have a certain degree of freedom of movement during temperature changes, reducing stress concentration caused by thermal expansion and contraction. During construction, the metal finishing is fixed to the outer surface of the thermal insulation layer through elastic brackets to ensure that each module can adapt to thermal expansion and contraction without damaging the wall structure due to thermal expansion.

[0069] Specifically, in step S3, the metal finishing is treated with a super-hydrophobic coating using nano-coating technology. This coating not only has the characteristics of waterproof and anti-ultraviolet but also can effectively resist climate erosion such as acid rain and salt spray. The coating construction should be carried out before the installation of the metal finishing is completed. The coating is evenly sprayed to ensure no peeling and bubbles, and the coating thickness reaches the predetermined requirements. Coatings with strong corrosion resistance or special metals such as galvanized steel or stainless steel are used at the connection parts of the metal finishing, and anti-corrosion glue is used to seal the joints to avoid moisture penetration into the connection parts. High-quality waterproof sealing strips are installed at the joints between the metal finishing and the thermal insulation layer to ensure that the joints are completely sealed to avoid corrosion caused by water leakage or a humid environment.

[0070] Specifically, in step S4, the wall modules are prefabricated in the factory. Each module consists of a thermal insulation layer and a metal finish. The laying of the moisture-proof layer, the installation of metal plates, the treatment of coatings, etc. are completed in the factory. Each module is produced according to standardized dimensions and installation requirements to ensure the compatibility between modules, avoid on-site adjustments, reduce errors during the construction process, and use special lightweight installation tools such as slide rail brackets and adjustable aluminum alloy brackets. During on-site installation, the modules only need to be placed on fixed brackets for connection, reducing the cumbersome operations in traditional installation methods. The segmented installation method is adopted, installing one module at a time, and a precise docking system is used to ensure seamless connection between each module. A precise docking system is designed at the joints of each module to ensure no gaps between modules, avoid air or moisture penetration, and improve the overall sealing and thermal insulation performance of the wall.

[0071] Specifically, in step S5, a nano-coating with self-cleaning function is used. A self-cleaning coating is sprayed on the surface of the metal finish. This coating makes dust and water droplets easy to slide off through the principle of surface tension, thus keeping the wall surface clean. The modular thermal insulation layer and metal finish are designed so that when damage occurs or maintenance is required, a certain part of the wall can be replaced individually without demolishing the entire wall system. The modules can be replaced with simple disassembly tools, reducing maintenance time and costs. A detailed wall inspection plan is formulated, including the anti-corrosion inspection of the metal finish, the moisture-proof inspection of the thermal insulation layer, the integrity inspection of the sealing strips, etc., to ensure that the wall maintains the best state during long-term use. The metal finish is cleaned regularly every year, especially in high-pollution areas, to ensure the continuous effectiveness of the coating.

[0072] Specifically, in step S6, all thermal insulation materials, metal finishes and connection materials must meet the green building standards. Recyclable, non-toxic and harmless materials are selected to reduce the impact of building materials on the environment. High-efficiency thermal insulation materials are used to ensure effective heat insulation of the wall in both winter and summer.

[0073] Through the above technical solutions, in the present invention, by optimizing the selection of insulation layer materials and metal facades, the thermal insulation performance of the wall has been greatly improved, effectively reducing the thermal bridge effect, ensuring the temperature stability of the building in different seasons, thereby reducing the energy consumption of air conditioning and heating and achieving energy-saving effects. Secondly, the design without metal contact and the floating connection method effectively eliminate the problems of thermal bridges and structural deformation, improving the overall thermal insulation performance and crack resistance of the wall. In addition, the built-in moisture-proof layer and waterproof design avoid the moisture absorption of the insulation layer, extend the service life of the wall, reduce the risk of corrosion and mildew, and greatly shorten the construction period through modular prefabrication technology and rapid installation system, simplify the on-site construction operation, and at the same time reduce the risks brought by errors and non-standard construction. The improved wall also has excellent climate adaptability and corrosion resistance, is suitable for various climate conditions, and performs more stably especially in extreme weather. In addition, the use of self-cleaning coatings and module replaceable design makes the later maintenance work more convenient and low-cost, effectively reducing the maintenance period and cost.

[0074] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A process and structure for a composite wall with a metal finish and a thermal insulation layer, characterized in that: It includes the following steps: S1: Material selection and process optimization S1.1: Selection of thermal insulation layer materials: Use composite thermal insulation materials with low thermal conductivity, good waterproofness and high toughness (such as high-performance polyurethane foam or polystyrene foam), which have better heat insulation performance and can maintain stability in high-humidity environments, avoiding a decrease in thermal insulation performance caused by moisture absorption; S1.2: Optimization of metal facing materials: Select aluminum alloy or stainless steel with strong corrosion resistance and advanced surface treatment processes as metal facing materials. These metal materials not only have strong wind pressure resistance but also can effectively resist the erosion of the external climate, extending the service life of the wall; S1.3: Built-in moisture-proof layer: Add a moisture-proof membrane or waterproof coating with good air permeability between the thermal insulation layer and the metal facing to prevent water vapor from invading the thermal insulation layer and reducing the moisture absorption phenomenon. The moisture-proof layer needs to have good air permeability to ensure the balance of moisture inside and outside the wall and prevent the thermal insulation material from mildewing or rotting. S2: Structural connection and thermal bridge elimination S2.1: Metal-free contact design: Use non-metal connection materials, such as high-strength glass fiber-reinforced plastics (FRP) or rubber-based synthetic materials, to replace traditional metal connectors, which can effectively avoid direct contact between the metal facing and the thermal insulation layer, eliminate the thermal bridge effect, and reduce heat conduction; S2.2: Optimization of heat insulation gaskets and connectors: Add heat insulation gaskets at the contact points between the metal facing and the thermal insulation layer, and use polymer or composite gaskets with excellent heat insulation performance to reduce heat transfer and further improve the thermal insulation effect of the wall; S2.3: Floating connection method: Adopt the "floating" connection technology to avoid excessive fixation of the metal facing and the thermal insulation layer, enabling the metal facing to expand and contract freely during thermal expansion and contraction, reducing stress concentration and structural deformation caused by thermal expansion and contraction. S3: Protective layer and climate adaptability S3.1: Surface coating treatment: Conduct nano-coating treatment on the surface of the metal facing to increase the self-cleaning function and ultraviolet resistance, preventing problems such as rust and oxidation on the wall surface due to environmental pollution or climate change. The coating should have superhydrophobic properties to prevent water from accumulating on the surface; S3.2: Anti-corrosion design: Coat the metal connection parts with special anti-corrosion materials and add waterproof sealing strips at the joints to ensure that the joints are not easily permeable to water and avoid corrosion of the metal facing due to moisture intrusion; S3.3: Strengthen climate adaptability: For high-humidity or extreme climate regions, use thermal insulation materials and metal facing materials that are resistant to high and low temperatures, and customize the protection measures for the wall system according to the climate characteristics of different regions (such as strengthening functions such as anti-freezing, waterproofing, and wind resistance). S4: Modular prefabrication and on-site installation S4.1: Modular prefabrication: Combine the metal facing and the thermal insulation layer into standardized wall modules for prefabrication in the factory. The modular components include fixed thermal insulation layers and metal facings, and seam treatment, coating treatment, etc. are completed in advance in the factory to reduce the complexity of on-site construction; S4.2: Quick installation system: Design a dedicated wall installation system. Through lightweight installation systems such as slide rails and aluminum alloy brackets, the modules can be quickly fixed to the main building structure. The installation process requires no excessive mechanical equipment, simplifies the installation operation, and reduces the potential safety hazards during on-site construction; S4.3: Precise docking system: At the joints of the wall modules, design a dedicated docking system to ensure precise and seamless connection between the modules, avoiding heat loss or water vapor penetration caused by loose joints. S5: Design for post-wall maintenance and repair S5.1: Self-cleaning function: The metal finish adopts self-cleaning coating technology, enabling the wall surface to automatically remove dust and pollutants, reducing the workload of subsequent cleaning; S5.2: Replaceable module design: The metal finish and thermal insulation layer of the wall adopt a replaceable design. When damage occurs or maintenance is required, the damaged part can be replaced individually without demolishing the entire wall system, reducing maintenance costs; S5.3: Regular inspection and maintenance: Provide guidelines for regular inspection and maintenance of the wall, especially in humid and highly polluted areas. It is recommended to regularly check the moisture-proof layer and the corrosion of the metal finish to ensure the long-term service performance of the wall. S6: Environmental protection and energy-saving design S6.1: Selection of green materials: All thermal insulation materials, metal finishes, and connection materials are selected as environmentally friendly and recyclable materials, meeting the green building standards, reducing resource consumption and environmental pollution; S6.2: Energy-saving design: The high-efficiency thermal insulation performance of the wall effectively reduces the energy consumption of the building, especially the burden of air conditioning use in winter and summer, thereby reducing the building's energy consumption and operating costs; S6.3: Recycling of waste materials: During the demolition or repair process, the design ensures that all components can be easily disassembled and recycled, further enhancing the sustainability of the building.

2. The process construction method of a composite wall body with a metal finish and a thermal insulation layer according to claim 1, characterized in that: In step S1, select high-performance polyurethane foam (PU) or expanded polystyrene foam (XPS) as the main thermal insulation material. Ensure that these materials meet the building thermal insulation standards, have low thermal conductivity, good waterproof performance, and excellent compressive strength. Select aluminum alloy or stainless steel as the metal finish material. These metals have good corrosion resistance and lightweight characteristics. Use metal sheets with weather-resistant coatings, and the surface is treated by spraying or electroplating processes to enhance its durability and anti-fouling ability. The metal finish material should be treated with a nano-coating to enhance its self-cleaning function and have super-hydrophobic characteristics on the surface to avoid the accumulation of water stains and dust, reducing the difficulty of subsequent cleaning. Set a moisture-proof membrane with good air permeability between the thermal insulation layer and the metal finish, using materials such as PE film or EVA film. The moisture-proof layer needs to ensure that water vapor can be freely discharged while preventing external moisture from penetrating into the thermal insulation layer. When installing the thermal insulation layer, first lay the moisture-proof membrane and then install the metal finish, ensuring that the moisture-proof membrane completely covers the joints of the thermal insulation layer to avoid water leakage or moisture accumulation.

3. The process construction method of a composite wall body with a metal finish and a thermal insulation layer according to claim 1, characterized in that: In step S2, a metal-free connecting material is used, such as fiberglass-reinforced plastic (FRP) or composite joints. These materials not only have strong mechanical strength but also good heat insulation performance. For the connection points between the metal finish and the insulation layer, non-metal heat insulation materials (such as polyurethane glue, silicone, etc.) are used for fixation to avoid direct contact between the metal and the insulation layer and prevent heat from being guided through the metal. High-strength heat insulation gaskets are selected, mainly using high-density polymers or polymer composites. These materials have excellent heat insulation and compressive resistance. Heat insulation gaskets are installed at each joint to ensure that the connecting parts do not cause heat conduction and are sealed during installation to prevent air or moisture from entering. Elastic brackets or floating support structures are used at the fixed connection between the metal finish and the insulation layer, so that the metal finish can have a certain degree of freedom of movement during temperature changes, reducing stress concentration caused by thermal expansion and contraction. During construction, the metal finish is fixed to the outer surface of the insulation layer through elastic brackets to ensure that each module can adapt to thermal expansion and contraction without damaging the wall structure due to thermal expansion.

4. The process construction method of a composite wall body with a metal finish and a thermal insulation layer according to claim 1, characterized in that: In step S3, a superhydrophobic coating treatment is carried out on the metal finish using nano-coating technology. This coating not only has the characteristics of waterproof and anti-ultraviolet, but also can effectively resist climate erosion such as acid rain and salt spray. The coating construction should be carried out before the installation of the metal finish is completed. The coating is evenly sprayed to ensure no peeling and bubbles, and the coating thickness reaches the predetermined requirements. Coatings with strong corrosion resistance or special metals, such as galvanized steel or stainless steel, are used at the connection parts of the metal finish, and anti-corrosion glue is used to seal the joints to avoid moisture penetration into the connection parts. High-quality waterproof sealing strips are installed at the joints between the metal finish and the insulation layer to ensure that the joints are completely sealed and avoid corrosion caused by water leakage or a humid environment.

5. The process and structure of a composite wall with a metal finish and a thermal insulation layer according to claim 1, characterized in that: In step S4, the wall modules are prefabricated in the factory. Each module consists of an insulation layer and a metal finish. The laying of the moisture-proof layer, the installation of the metal plate, the treatment of the coating, etc. are completed in the factory. Each module is produced according to standardized dimensions and installation requirements to ensure the compatibility between modules, avoid on-site adjustment, and reduce errors during the construction process. Special lightweight installation tools, such as slide rail brackets and adjustable aluminum alloy brackets, are used. During on-site installation, the modules only need to be placed on the fixed brackets for connection, reducing the cumbersome operations in the traditional installation method. The segmented installation method is adopted, installing one module at a time, and a precise docking system is used to ensure seamless connection between each module. A precise docking system is designed at the joints of each module to ensure no gap between the modules, avoid air or moisture penetration, and improve the overall sealing and heat insulation performance of the wall.

6. The process structure of a composite wall with a metal finish and a thermal insulation layer according to claim 1, characterized in that: In step S5, a nano - coating with self - cleaning function is used. A self - cleaning coating is sprayed on the surface of the metal finish. This coating makes dust and water droplets slide off easily through the principle of surface tension, thus keeping the wall surface clean. The insulation layer and the metal finish are designed modularly, so that when damage occurs or maintenance is required, a certain part of the wall can be replaced individually without having to demolish the entire wall system. The modules can be replaced with simple disassembly tools, reducing maintenance time and costs. A detailed wall inspection plan is formulated, including anti - corrosion inspection of the metal finish, moisture - proof inspection of the insulation layer, integrity inspection of the sealing strips, etc., to ensure that the wall maintains the best state during long - term use. The metal finish is cleaned regularly every year, especially in high - pollution areas, to ensure that the effect of the coating remains effective.

7. The process and structure of a composite wall with a metal finish and a thermal insulation layer according to claim 1, characterized in that: In step S6, all insulation materials, metal finishes and connection materials must meet the green building standards. Recyclable, non - toxic and harmless materials are selected to reduce the impact of building materials on the environment. High - efficiency insulation materials are used to ensure that the wall can effectively insulate heat in both winter and summer.